Tire-rim tool



July 21, 1925.

n mmnwi l S E i mmawE INVENTOR ATTORNEY C. J. LAUNDRIE TIRE RIM TOOL Filed Nov. 28. 1924 Patented .luly 221, 192.

(t. LAUNlIEt-IE, 01* SAN JOSE, GALIFGRNIl-L Tran-urn: TOOL.

Application filed November 28, 1924. Serial No. 752,713.

To all whom it may concern: P known that 1, Grain? .ie 1; d. liaUNni-rn, a citizen. ot the United States, and a resident t San dose, in the county of Santa Clara and State of California, have invented certain new and useful Improvements in 'lirelliin Tools, of which the following is a specilication.

This invention relates particularly to a tool for contracting; or expanding a rim for the removal or replacen'ient of a tire thereon.

it is one object o't my invention to provide a simple mechanism for the purpose in- (limited that may be quick y adjusted for use on rims of varioiui dian'ieters and one that may be easily and quickly collapsed into a compact package.

it is a turther object oi the invention to provide a device of the character indicated that will be siniiple in construction and operation, economical to manufacture, and highly e'liicient in its practical application.

lin the drawing Figure 1 is a plan view of the device in an operative position contracting atire rim. Figure 2 is a perspective illustration of a portion oi the device illustrating; the method of securing the tire rim engaging bars to a common support.

Figure 3 is a detail perspective illustration of one of the locking dogs.

Referring more particularly to the drawing, ll show at l a casting having a gear or pinion 2 revolubly mounted therein and ro-- tated by means of a suitable lever 3 mounted upon its shaft 4.

The casing 1 has a pair of parallel extensions tormed thereon as shown at 5 Mounted to slide in case 1 between said parallel extensions 5--5 is a rack 6 engaging said gear 2 and moved in either direction through case 1 by the rotation thereof.

Upon either side of rack 6 and at one end thereof are provided spaced pins as shown at -7.

At 8- 888 are shown four bars, each provided with a hook as 9 on one end and l'iavinp; its opposite end bent at an angle thereto and provided with a notch as 10 and an orifice 11.

llwo of these arms also have collars as 12 pivotally mounted thereon as at 18, these collars in the present case being oi different widths for the purposehereinafter set -torth.

@n the inner sides of bars 8 and adjacent to their notched ends are ear-s14, each. opposing}; pair of cars being riveted together as at 15.

ll hen the device is disassembled the two bars of each pair of bars 88 may be pivotally adjusted relative to each other and thereby collapsed into an exceedingly small space for packing.

in assen'iblin g' the device, one pair oi? bars is spread and the notch and orilice in each of the said bars brought into engagement with one oi? the set of pins 7 on the end of ratchet 6, and the collar 12 swung down over the eng: jed parts as shown in Figure l, tl'icrcby securely binding'the two bars to ratchet 6 in their proper position without the use oi nuts, bolts, screws or similar tastenings that require considerable time to place or remove.

The other pair of bars S8 are now similarly spread and secured on pins 7-7 on extensions 5 and secured by a collar The rack G is now thrust through case 1 and handle 3 turned until the hooked arms 8 engage the rim l6. Furtliier turning of the handle 3 will draw the opposing pairs of arms 8 toward each other a .d ctliectually contract the tire rim as desired.

In disassembling; for storing or packing it is only necessary to swing back collars 12,

which permits the detaching: and folding of arms 88.

It may be readily seen from the foregoing that the device is extremely simple in construction and economical. to manufacture, and only a tow moments are required to assemble and disassemble it. Enrthermore, the pull on the opposing pairs of bars is direct and the construction permits the wide spreading of bars 8, and the device may be as easily and quickly applied in emergency cases on the road as in the shop.

Since it is desirable to provide some means of locking the rim in either a contracted or an expanded position, I have provided dogs 16 for engaging the teeth of ratchet 6 and secure it against movement.

One dog 16 is pivotally mounted on case 1 as at 17 and may be thrown into engagement with the ratchet 6 when the hooks 9 are placed within the rim and the same expanded, thereby ellectively looking it in that position. The other dog 16 is pivotally mounted on one collar 12 as at 18 and may said pinion, a rack engaging the pinion and slidably engaging the support, laterally extending pins mounted upon said rack and said support, a pair of outwardly diverging rim engaging elements engaging the pins on the rack and means for locking said elements in engagement with said pins, a pair of outwardly diverging rim engaging elements engaging the pins on said support and means for locking said elements in engagement with said pins.

CHARLES J. LAUNDRIE.

an LA; 

